Re: preempt-rt, NUMA and strange latency traces

Ingo Molnar
2006-02-08T10:26:37Z

* Steven Rostedt <rostedt@goodmis.org> wrote:

> > I've been experimenting with 2.6.15-rt16 on a dual 2.8GHz Xeon box
> > with quite good results and decided to make a run on a NUMA dual node
> > IBM x440 (8 1.4GHz Xeon, 28GB ram).
> >
> > However, the kernel crashes early when creating the slabs. Does the
> > current preempt-rt patchset supports NUMA machines or has support
> > been disabled until things settle down?
>
> Yeah, currently the -rt patch doesn't work well with NUMA.

FYI, i've got a new port of upstream slab.c to -rt, which should work on
NUMA too. It'll be in -rt17 (later today or tomorrow).

Ingo